View state is a repository in an ASP.NET page that can store values that have to be retained during postback. The page framework uses view state to
persist control settings between postbacks
.
What is ViewState used for?
View state is a repository in an ASP.NET page that can store values that have to be retained during postback. The page framework uses view state to
persist control settings between postbacks
.
What does the term ViewState mean?
View state is the
page-level state management technique used in the ASP.NET page
framework to retain the value of controls and page between round trips. … View state is ideally used when the data to be preserved is relatively small and the data need not be secured.
What is ViewState in webform?
View State is
the method to preserve the Value of the Page and Controls between round trips
. It is a Page-Level State Management technique. View State is turned on by default and normally serializes the data in every control on the page regardless of whether it is actually used during a post-back.
Does ViewState affect performance?
Performance Impacts
As the ViewState grows larger. It affects performance in the following ways:
Increased CPU cycles to serialize and to deserialize the ViewState
. Pages take longer to download because they are larger.
Is ViewState secure?
The VIEWSTATE is
a security risk if it is not encrypted
(anyone could modify the VIEWSTATE values and POST to your pages.) If that page can decode the VIEWSTATE then it is not encrypted.
Is there ViewState in MVC?
ASP.NET
MVC does not use ViewState in
the traditional sense (that of storing the values of controls in the web page). Rather, the values of the controls are posted to a controller method. Once the controller method has been called, what you do with those values is up to you.
What is C# MVC?
MVC stands for
Model, View, and Controller
. MVC separates an application into three components – Model, View, and Controller. Model: Model represents the shape of the data. A class in C# is used to describe a model. Model objects store data retrieved from the database.
What is the difference between web config and machine config?
The web. config files specify
configuration settings
for a particular web application, and are located in the application’s root directory; the machine. config file specifies configuration settings for all of the websites on the web server, and is located in $WINDOWSDIR$Microsoft.NetFrameworkVersionConfig.
What is the use of EnableViewState property in asp net?
Explain the purpose of EnableViewState property.
–
It allows the page to save the users input on a form across postbacks
. – It saves the server-side values for a given control into ViewState, which is stored as a hidden value on the page before sending the page to the clients browser.
What is the difference between ViewState and SessionState?
The basic difference between these two is that the ViewState is
to manage state at the client’s end
, making state management easy for end-user while SessionState manages state at the server’s end, making it easy to manage content from this end too. ViewState: It is maintained at only one level that is page-level.
How is ViewState encoded?
ViewState is
base64-encoded
. It is not encrypted but it can be encrypted by setting EnableViewStatMAC=”true” & setting the machineKey validation type to 3DES. If you want to NOT maintain the ViewState, include the directive < %@ Page EnableViewState=”false” % > at the top of an .
Is a way to define variable in C#?
In C#, variables are
categorized based on how they store their value in memory
. Variables can be value type or reference type or pointer type. It is not necessary to specify the specific type when declaring variables. Use the var keyword instead of a data type.
Can ViewState be accessed in another page?
You can’t access ViewState of one page from another page directly
. If you want to access a particular ViewState value then you can pass the value in Context collection and then access the value in other page.
How do I turn off ViewState?
ViewState can be easily disabled for a particular control by
setting EnableViewState property to False
. ViewState can be disabled for the whole Page i.e. all controls on the Page by setting the EnableViewState property to False in the @Page Directive.
What is a ViewState how does it affect the application performance if so how do you improve it?
ViewState uses a hidden variable that resides on the page to store control values. This means that if
a page has lots of controls with viewstate enabled, the page size would become heavy
, in several kilobytes; i.e., it will take longer to download the page.
